#include<stdio.h>

int Sum(int s, int e)
{
    int sum = 0;
    int i = s;
    for(;i <= e;i++){
        sum += i;
    }
    return sum;
}



int main()
{

    printf("process is running\n");


    int start = 1;
    int end = 100;
    int result = Sum(start, end);

    printf("process is done:%d\n", result);

    return 0;
}
